Hoop locking device

ABSTRACT

A hoop locking device for locking a hoop installed to surround a plurality of main reinforcements to give a transverse constraint force of the hoop is proposed. The hoop locking device includes: first clips configured to fix opposite ends of hoops, which cross each other while passing by one of the plurality of main reinforcements, each of the first clips comprises: an annular ring formed to surround an overlapping portion of the hoops disposed to vertically overlap each other; a leg part extending radially from opposite ends of the annular ring; and anchor parts formed to be bent rearwards from ends of the leg parts, respectively, and the opposite ends of the hoops are bent by 90 degrees while passing by the main reinforcement.

CROSS-REFERENCES TO RELATED APPLICATIONS

This application claims priority to and the benefit of Korean PatentApplication No. 10-2020-0050157, filed on Apr. 24, 2020, the disclosureof which is incorporated herein by reference in its entirety.

BACKGROUND OF THE INVENTION 1. Field of the Invention

The present disclosure relates to a hoop locking device, and moreparticularly, to a hoop locking device for locking a hoop installed tosurround a plurality of main reinforcements to give a transverseconstraint force of the hoop.

2. Description of the Prior Art

Hoops are generally installed in a transverse direction of acircumference of a main reinforcement in a reinforcement concrete (orsteel frame reinforcement concrete) compressed member or verticalmember, such as a column, a beam, a shear wall, or an abutment of abuilding structure to fix a main reinforcement of a reinforcementconcrete vertical member, prevent buckling of the main reinforcement,restrain transverse deformation (buckling) of the main reinforcement dueto a vertical load, and increase the strength and ductility of aconcrete core of a vertical member of reinforcement concrete, therebypreventing a brittle fracture, by which a reinforcement concretevertical member is instantaneously broken. In particular, opposite endsof a hoop that surrounds a column main reinforcement are folded by a 135degree hook to be fixed to a column core.

FIG. 1 is a plan view illustrating a state in which hoops connect facingmain reinforcements in a reinforcement concrete column, a beam, or ashear wall are disposed according to the related art.

In FIG. 1, main reinforcements 2 are installed in a rectangular shapelongitudinally and transversely at a predetermined interval in areinforcement concrete column 1 that is an example of a reinforcementconcrete vertical member, external hoops 3 are installed transverselyaround the outside of the main reinforcements along the axial directionof the main reinforcements 2, and internal hoops 4 that fasten thefacing main reinforcements 2 are installed in the interior of theexternal hoops 3 at a predetermined interval.

Because the external hoops and the internal hoops (cross-tie bars)fasten a main reinforcement in a reinforcement concrete column, a bar,and a shear wall according to the related art, the main reinforcementcan resist against an earthquake when the earthquake occurs whilerestraining buckling of the column main reinforcement (ananti-earthquake design), and concrete in the column core is constrainedby the internal and external hoops so that the docility of thereinforcement concrete column can be improved.

In the internal reinforcement structure of a reinforcement concretestructure according to the related art illustrated in FIG. 1, oppositeends of the external hoops 3 can be buried in the concrete core so thatthe external hoops 3 may be fixed and secured by bending the externalhoops 3 that pass by the corner portions of the main reinforcement 5 by135 degrees at one location of the corner portion of the mainreinforcement 5, at which the opposite ends E1 and E2 of the externalhoops 3 displayed at the left lower end thereof meet each other suchthat the opposite ends of the external hoops 3 face the inner side ofthe concrete structure. However, in the construction step, constructionmay be made without sufficiently bending the opposite ends of theexternal hoops 3.

Meanwhile, FIGS. 2 and 3 disclose a hoop locking device 10 capable offixing the opposite ends of the external hoops 3 after the externalhoops 3 are bent by 90 degrees without bending the external hoops 3 byup to 135 degrees. FIG. 2 is a perspective view of a hoop locking devicefor locking hoops installed in a main reinforcement according to therelated art. FIG. 3 is an exploded perspective view of the hoop lockingdevice according to the related art.

As illustrated in FIGS. 2 and 3, the hoop locking device 10 according tothe related art includes a body 12, a horizontal member 20, a verticalmember 30, and movement preventing member 40 (in detail, 41, 42, 43-1,43-2, 43-3, and 44). The hoop locking device 10 is installed in a hoop3, and the hoop 3 is installed in a main reinforcement 2 to function torestraining buckling of the main reinforcement 2.

However, the structure of the hoop locking device according to therelated art is complex and it is difficult to construct the hoop lockingdevice in a narrow space.

Furthermore, according to the related art, the external hoop 3 and themain reinforcement 2 may be directly fastened to each other by afastening line to lock the external hoop 3. However, the method offastening the external hoop 3 and the main reinforcement 2 by using thefastening line weakens the durability of the concrete structure due to aweak fastening state caused by a construction environment (a weather oran impact) and the like. Furthermore, a rotational force is given to themain reinforcement to couple the main reinforcement by using a spiralcoupler and a spiral main reinforcement for promptness in a process ofcoupling a reinforcement net to the existing main reinforcement 2 aftermaking the reinforcement net according to a reinforcement assemblymethod, and then, there is a danger of a low coupling force or an easyseparation due to the rotational force when the external hoop 3 and themain reinforcement 2 are coupled to each other by the fastening line.

Meanwhile, another technology according to the related art isillustrated in FIG. 4.

The technology discloses a hoop locking device including a first body 50provided to abut an outer surface of the hoop 3, second bodies 70extending from opposite ends of the first body 50 to extend inwards andbetween which the hoop 3 is located, third bodies 80 provided at ends ofthe pair of second bodies 70 to extend in different directions, and anintroduction hole 90.

However, because the technology used a plate shape, and the fasteningforce of concrete is weak because the concrete is not perfectlyintroduced and does not make contact as a whole in the construction.Therefore, a separate configuration of the introduction hole 90 isnecessary to solve the problem.

Furthermore, because the technology includes only the second bodies 70formed to extend from the first body 50 formed vertically and the thirdbodies 80 formed at opposite ends of the second bodies 70 vertically indifferent directions, it fails to suggest a configuration for fixing thehoop locking device to another object. Accordingly, because thetechnology only pursue easiness of coupling with the hoop while notachieving a settling force of the third bodies 80, the whole hooplocking device may be separated together with the reinforcement if asevere external force such as an earthquake is applied.

PRIOR TECHNICAL DOCUMENTS Patent Documents

(Patent Document 1) Korean Patent No. 10-1750792 (Jun. 27, 2017)

(Patent Document 2) Korean Patent No. 10-1457114 (Nov. 6, 2014)

SUMMARY OF THE INVENTION

The present disclosure has been made in an effort to solve theabove-mentioned problems, and provides a hoop locking device that canlock a hoop for giving a transverse constraint force of the hoop with asimple structure.

According to an aspect of the present disclosure, there is provided ahoop locking device for locking an external hoop installed to surround aplurality of main reinforcements on the outside thereof, the hooplocking device including: first clips configured to fix opposite ends ofhoops, which cross each other while passing by one of the plurality ofmain reinforcements, wherein each of the first clips includes: anannular ring formed to surround an overlapping portion of the hoopsdisposed to vertically overlap each other; a leg part extending radiallyfrom opposite ends of the annular ring; and anchor parts formed to bebent rearwards from ends of the leg parts, respectively, wherein theopposite ends of the hoops are bent by 90 degrees while passing by themain reinforcement, and wherein the leg part is formed to extendradially long from the opposite ends of the annular ring to be disposedin and fixed to a concrete core.

The hoop locking device may further include: second clips configured toprevent separation of the first clips from the hoops, each of the secondclips may include: an arc-shaped hook coupled to one of the two legparts; a stopper configured to be stopped the other of the two leg partsto restrain the other leg part from being widened; and a connectorconnecting the arc-shaped hook and the stopper, and an absorber forextending and contracting the connector may be formed in the connector.

The hoop locking device may further include fastening clips configuredto fasten the hoops to the main reinforcement, each of the fasteningclips may include: a first fastening hook formed to surround the mainreinforcement; a second fastening hook extending from the firstfastening hook and formed to surround the hoop; and a third fasteninghook extending from the second fastening hook, and an absorber for easydeformation of the first fastening hook may be formed in the firstfastening hook.

Each of the hoops may include linear portions and a corner portion, andeach of the fastening clip may include flat shapes installed in thelinear portions and a corner shape installed in the corner portion.

The third fastening hook may stop a tool for pulling the first fasteninghook and the second fastening hook, such that the main reinforcement andthe hoop are attached to each other by the first fastening hoop and thesecond fastening hoop.

The first fastening hook may be formed to be open toward the outside,the second fastening hook may be formed to be bent downwards fromopposite ends of the first fastening hook so as to be opened toward theinner side, and the third fastening hook may be bent downwards from thesecond fastening hook to be opened toward the outside.

The hoop locking device of the present disclosure can effectively lock ahoop with a simple structure.

Furthermore, the hoop locking device of the present disclosure is lessinfluenced by an external environment, can allow a reinforcement to becontinuously constructed while a reinforcement net installed is notscattered and the shape of the reinforcement net is maintained eventhough a rotational force is given to a main reinforcement when a spiralmain reinforcement is coupled to the spiral coupler in the case in whichthe preassembled reinforcement net is coupled to the main reinforcementinstalled in advance, and can prevent weakening of the mainreinforcement and the hoop.

Furthermore, the hoop locking device of the present disclosure caneasily couple the second fastening hook to the hoop by forming theabsorber in the first fastening hook such that the first fastening hookis widened.

Furthermore, the hoop locking device of the present disclosure can use atool when the main reinforcement and the hoop are attached to eachother, by forming the third fastening hook.

Further, the hoop locking device of the present disclosure can beapplied to both the corner portion and the linear portion.

Furthermore, the force transmission mechanism is that, when the mainreinforcement of the corner portion, where the ends of the hoops crosseach other, is about to buckle in a buckling direction, a bending momentis generated in the bending portion of the 90 degree hook of the hoop sothat an end of the hoop is deformed to be straightened toward adeformation direction, and the settling force of the first clips of thepresent disclosure toward a direction of the concrete core is applied asa pressing force on ends of the hoop's 90 degree hook against thespreading deformation. That is, there is an effect of a resistant forceas an effect of a lever.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other objects, features, and advantages of the presentinvention will be more apparent from the following detailed descriptiontaken in conjunction with the accompanying drawings, in which:

FIG. 1 is a plan view illustrating a state in which hoops connect facingmain reinforcements in a reinforcement concrete column, a beam, or ashear wall are disposed according to the related art;

FIG. 2 is a perspective view of a hoop locking device for locking hoopsinstalled in a main reinforcement according to the related art;

FIG. 3 is an exploded perspective view of the hoop locking deviceaccording to the related art;

FIG. 4 is a perspective view of another hoop locking device according tothe related art;

FIG. 5 is a perspective view of a first clip according to an embodimentof the present disclosure;

FIG. 6 is an exemplary view of a use state of the first clip accordingto the embodiment of the present disclosure;

FIG. 7A-7B are exemplary views of a use state of a second clip accordingto the embodiment of the present disclosure;

FIG. 8 is a perspective view of a fastening clip installed at a linearportion of an external hoop according to the embodiment of the presentdisclosure;

FIG. 9 is an exemplary view of a use state of the fastening clip at thelinear portion of the external hoop according to the embodiment of thepresent disclosure;

FIG. 10 is a plan view of the fastening clip of the linear portion ofthe external hoop according to the embodiment of the present disclosure;

FIG. 11 is a perspective view of the fastening clip installed at acorner portion of the external hoop according to the embodiment of thepresent disclosure;

FIG. 12 is an exemplary view of a use state of the fastening clip at thecorner portion of the external hoop according to the embodiment of thepresent disclosure; and

FIG. 13 is a plan view of the fastening clip at the corner portion ofthe external hoop according to the embodiment of the present disclosure.

DETAILED DESCRIPTION OF THE EXEMPLARY EMBODIMENTS

The present disclosure relates to a hoop locking device for lockinghoops installed to surround a plurality of main reinforcements. A devicefor locking a hoop according to an embodiment of the present disclosureincludes first clips, second clips and fastening clips. In theembodiment of the present disclosure, a hoop refers to an external hoop.

The first clips fix opposite ends of the hoops to give a transverseconstraint force of the hoops to lock the hoops that surround theoutside of the plurality of main reinforcements. The second clipsprevent the first clips that fix the opposite ends of the hoops frombeing separated from the hoops, in addition to the first clips.Furthermore, the fastening clips lock the hoops by binding the mainreinforcements and the hoops.

The first clips, the second clips, and the fastening clips may beproperly combined in the interior of a concrete member of a structure,if necessary, to effectively lock the hoops.

Each of the first clips may include a linear shape and a flat shape, andin the embodiment, a linear shape will be illustrated in the drawingsand described as a reference.

Hereinafter, the present disclosure will be described in detail withreference to the accompanying drawings.

As illustrated in FIGS. 5 and 6, the first clips are adapted to give atransverse constraint force by locking the hoops 200 installed tosurround the plurality of main reinforcements 100 on the outsidethereof, and fix the opposite ends of the hoops 200. That is, theopposite ends of the hoops 200 installed to surround the plurality ofmain reinforcements 100 are bent by an angle of 90 degrees when thehoops 200 meet any one of the main reinforcements 100. Here, the mainreinforcement 100 is one of the main reinforcements 100, which islocated at a corner portion C, and the opposite ends of the hoops 200that pass by the main reinforcement 100 and are bent by 90 degrees areoverlap each other. Accordingly, the first clips coupled and fix theoverlapping portions of the hoops 200 on opposite sides of the mainreinforcement 100.

In detail, as illustrated in FIG. 6, each of the first clips 300includes an annular ring 310 formed to surround an overlapping portionof the hoops 200, a leg part 320 extending radially from opposite endsof the annular ring 310 and fixed to a concrete core, and anchor parts330 formed to be bent rearwards from ends of the leg parts 320,respectively. The leg parts 320 extending from the opposite ends of theannular ring 310 are formed such that the interval between the leg parts320 becomes wider as it goes from the annular ring 310. Furthermore, theanchor parts 330 increase the fixing effect of the leg parts 320.

In detail, the force transmission mechanism is that, when the mainreinforcement 100 of the corner portion, where the ends of the hoops 200cross each other, is about to buckle in a buckling direction D1, abending moment is generated in the bending portion H of the 90 degreehook of the hoop so that an end of the hoop 200 is deformed to bestraightened toward a deformation direction D2, and the settling forceof the first clips 300 of the present disclosure toward a direction D3of the concrete core is applied as a pressing force on ends of thehoop's 90 degree hook against the spreading deformation. That is, thereis an effect of a resistant force as an effect of a lever.

That is, the first clips 300 may constraints of the hoops 200 to preventbuckling of the main reinforcement 100 as the annular rings 310 surroundand fix the overlapping portion of the hoops 200 and the leg parts 320are fixed to the concrete core of the reinforced concrete member such asa column.

Furthermore, if the first clips 300 of the present disclosure are alsoinstalled at portions, at which the 90 degree hook portions of the innerhoop (a cross-tie bar) and the linear portion of the external hoop crosseach other, a settling force toward the core is also applied to the 90degree hook portion of the inner hoop 200 so that the first clips 300have an effect of resisting against the spearing deformation of the mainreinforcement 100 (the main reinforcement except for the corner portion)due to bucking as a lever effect.

As illustrated in FIGS. 7A-7B, each of the second clips 400 includes anarc-shaped hook 410 coupled to one of the two leg parts 320, a stopper420 configured to be stopped the other of the two leg parts 320 torestrain the other leg part from being widened, and a connector 430connecting the arc-shaped hook 410 and the stopper 420. Furthermore, anabsorber 431 for extending and contracting the connector 430 is formedin the connector 430.

Because the leg parts 320 of the first clips 300 are prevented frombeing widened, by the second clip 400, the first clip 300 can beprevented from being separated from the hoop 200 due to an impact or thelike.

Meanwhile, when the preassembled main reinforcement 100 of column netsand a screw type coupler of the reinforcement installed in advance arecoupled to each other, a rotational force should be given to the netmain reinforcement 100 for assembling. Then, the rotational fastening ofthe main reinforcement 100 may be allowed while the preassembled columnnet shape is maintained even though a rotational force is given to themain reinforcement 100 of the net shape. The fastening clips are adaptedto couple the hoops 200 installed to surround the plurality of mainreinforcements 100 of the preassembled reinforcement nets to the mainreinforcement 100. Then, the used main reinforcement 100 may be a spiralreinforcement. If the connection end of the main reinforcement 100 isextruded spirally, the spiral reinforcement may not be used.

As illustrated in FIG. 8, each of the fastening clips includes a firstfastening hook 510, a second fastening hook 520, and a third fasteninghook 530.

As illustrated in FIGS. 9 and 10, the first fastening hook 510 is formedto surround the main reinforcement 100. Furthermore, the first fasteninghook 510 may be opened toward the outside of the concrete column.Furthermore, an absorber 511 that facilitates deformation of the firstfastening hook 510 is formed in the first fastening hook 510. When thesecond fastening hook 520 is coupled to the hoop 200 after the firstfastening hook 510 is coupled to the main reinforcement 100, the secondfastening hook 520 may be easily coupled to the hoop 200 by causing theabsorber 511 to deform the shape of the first fastening hook 510. Thatis, because the absorber 511 is formed in the first fastening hook 510,the second fastening hook 520 is widened to be coupled to the hoop 200.

The second fastening hook 520 is formed to extend from the firstfastening hook 510 so as to surround the hoop 200. That is, the secondfastening hook 520 is bent toward the lower side from the opposite endsof the first fastening hook 510 to be opened toward the inner side ofthe concrete column. As described above, by forming the absorber 511 inthe first fastening hook 510, the second fastening hook 520 may beeasily coupled to the hoop 200 after the first fastening hook 510 iscoupled to the main reinforcement 100.

The third fastening hook 530 is formed to extend from the secondfastening hook 520. That is, the third fastening hook 530 is bentdownwards from the second fastening hook 520 to be opened toward theoutside of the concrete column. The third fastening hook 530 does notfunction to directly couple the main reinforcement 100 and the hoop 200.The third fastening hook 530 stops a tool for pulling the firstfastening hook 510 and the second fastening hook 520, such that the mainreinforcement 100 and the hoop 200 are attached to each other by thefirst fastening hoop 510 and the second fastening hoop 520. That is, thefirst fastening hook 510 and the second fastening hook 520 are opened inopposite directions because the main reinforcement 100 and the hoop 200are coupled to each other so that the main reinforcement 100 and thehook 200 are easily attached to each other if the tool is stopped by thethird fastening hook 530 to be pulled. Then, one side (or oppositesides) of the third fastening hook 530 is an arc-shaped hook.

The above-described fastening clip may include a corner shape B and aflat shape A according to an installation location thereof. The cornershaped fastening clip, as illustrated in FIG. 12, couples the mainreinforcement 100 located at the corner portion C, and the bent hoops200 while the second fastening hook 520 forms 90 degrees whilesurrounding the main reinforcement 100. Further, the flat fasteningclip, as illustrated in FIG. 9, couples the linear portion S of thehoop, which is not bent, to the main reinforcement 100. The cornershaped fastening clip and the flat fastening clip have the same shape,and the second fastening hook may be coupled to the hoop 200 bent by 90degrees as the interval between the second fastening hook 502 becomeswider as compared with the flat fastening clip.

The hoop locking device according to the present disclosure is notlimited to the above-described embodiment, and may be variously modifiedand carried out without departing from the technical spirit of thepresent disclosure.

What is claimed is:
 1. A hoop locking device for locking an externalhoop installed to surround a plurality of main reinforcements on theoutside thereof, the hoop locking device comprising: first clipsconfigured to fix opposite ends of hoops, which cross each other whilepassing by one of the plurality of main reinforcements, wherein each ofthe first clips comprises: an annular ring formed to surround anoverlapping portion of the hoops disposed to vertically overlap eachother; a leg part extending radially from opposite ends of the annularring; and anchor parts formed to be bent rearwards from ends of the legparts, respectively, wherein the opposite ends of the hoops are bent by90 degrees while passing by the main reinforcement, and wherein the legpart is formed to extend radially long from the opposite ends of theannular ring to be disposed in and fixed to a concrete core.
 2. The hooplocking device claim 1, further comprising: second clips configured toprevent separation of the first clips from the hoops, wherein each ofthe second clips comprises: an arc-shaped hook coupled to one of the twoleg parts; a stopper configured to be stopped the other of the two legparts to restrain the other leg part from being widened; and a connectorconnecting the arc-shaped hook and the stopper, and wherein an absorberfor extending and contracting the connector is formed in the connector.3. The hoop locking device claim 1, further comprising: fastening clipsconfigured to fasten the hoops to the main reinforcement, wherein eachof the fastening clips comprises: a first fastening hook formed tosurround the main reinforcement; a second fastening hook extending fromthe first fastening hook and formed to surround the hoop; and a thirdfastening hook extending from the second fastening hook, and wherein anabsorber for easy deformation of the first fastening hook is formed inthe first fastening hook.
 4. The hoop locking device claim 3, whereineach of the hoops comprises linear portions and a corner portion, andwherein each of the fastening clip comprises flat shapes installed inthe linear portions and a corner shape installed in the corner portion.5. The hoop locking device claim 3, wherein the third fastening hookstops a tool for pulling the first fastening hook and the secondfastening hook, such that the main reinforcement and the hoop areattached to each other by the first fastening hoop and the secondfastening hoop.
 6. The hoop locking device claim 3, wherein the firstfastening hook is formed to be open toward the outside, wherein thesecond fastening hook is formed to be bent downwards from opposite endsof the first fastening hook so as to be opened toward the inner side,and wherein the third fastening hook is bent downwards from the secondfastening hook to be opened toward the outside.